I'm not sure that I'd want the OS to kill my browser while I'm working within it.

Of course the browser is the largest process in my system, so when I notice that memory is running low I restart it and I gain some 15 GB.

Basically I am the memory manager of my system and I've been able to run my 32 GB Linux laptop with no swap since 2014. I read that a system with no swap is suboptimal but the only tradeoff I notice is that manual OOM vs less writes on my SSD. I'm happy with it.